A while ago I built a telegraph machine and was amazed by the simplicity and the joy obtained from pounding out my name hundreds of times. When I saw that the weekly challenge was magnet themed, I knew that I had to make an instructable. I was able to build it in an hour while taking pictures, and I bet it could be done in about 30 minutes. Telegraphs are simple communication devices using a switch operated at one station to control a electromagnet at a separate telegraph station. The electromagnet then will pull down a piece of steel for a short time or a longer time (dot or dash). It was used in the U.S. civil war and as used as a major communication device from the early 1800's until the mid 1900's. Now let's go make one!